MESON Chess Problem Database

Problem Display
PID: 23110 (K2n4/1p6/k7/8/1Q1b4/8/8/N7 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

K2n4/1p6/k7/8/1Q1b4/8/8/N7

#2

3 + 4

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Qa4#
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qa5#
      • 1...Bc3
        • 2.Sc5#
      • 1...Bb6
        • 2.Qc4#
      • 1...Sc6
        • 2.Qxb7#
      • 1...b6
        • 2.Qa4#

Anticipated by 132279(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(B)
  • Actual
    • S(A);
    • Threat
      • QAR1(B)
    • Vars
      • B(a);N_GUARD::S(A)
      • B(a);SBLOCK,S_CUTP(c)::QAB(B)
      • S(d);N_GUARD::QAB1(B),XP(c)
      • P(c);SBLOCK::QAR2(B)
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